v3.3.1.900

Organization and Ownership (Details Textuals)
$ in Thousands

12 Months Ended

Dec. 31, 2015

USD ($)

Dec. 31, 2014

USD ($)

ft²

property

Dec. 31, 2013

USD ($)

ft²

Dec. 31, 2015

ft²

Dec. 31, 2015

building

Dec. 31, 2015

project

Dec. 31, 2015

a

Jan. 31, 2014

ft²

Real Estate Properties [Line Items]

Proceeds from Sale of Real Estate Held-for-investment | $

$ 319,639

$ 427,544

$ 21,178

Stabilized occupancy

95.00%

Number of real estate properties

5

2

Percentage of general partnership interest owned by the company in the Operating Partnership

98.10%

98.00%

Ownership interest of noncontrolling interest

1.90%

2.00%

Net Rentable Area

1,471,319

200,306

1,046,394

79,000

Kilroy Realty, L.P. [Member]

Real Estate Properties [Line Items]

Proceeds from Sale of Real Estate Held-for-investment | $

$ 319,639

$ 427,544

$ 21,178

Percentage of limited partnership interest owned by Operating Partnership

99.00%

Kilroy Realty Finance, Inc. [Member]

Real Estate Properties [Line Items]

Percentage of General partnership interest owned by wholly-owned subsidiary of the Company

1.00%

Washington

Real Estate Properties [Line Items]

Number of real estate properties | building

12

Lease Up Properties [Member]

Real Estate Properties [Line Items]

Number of real estate properties

2

1

Net Rentable Area

^[1]

73,000

Development Properties [Member]

Real Estate Properties [Line Items]

Number of real estate properties | project

^[1]

5

Net Rentable Area

^[2],[3]

1,910,000

4040 Civic [Member] [Member]

Real Estate Properties [Line Items]

Net Rentable Area

130,237

Development Properties [Domain]

Real Estate Properties [Line Items]

Number of real estate properties | a

10

[1]	Estimated rentable square feet upon completion.
[2]	Excludes acquisition-related costs and non-lease related accrued liabilities assumed. Includes assumed unpaid leasing commissions and tenant improvements.
[3]	The results of operations for the properties acquired during 2014 contributed $7.7 million and $2.8 million to revenues and net income from continuing operations, respectively, for the year ended December 31, 2014.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
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-Topic 230
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-Section 45
-Paragraph 12
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